(a)[1]
On the abscisic acid diagram, place an asterisk (*) beside each chiral carbon atom.
(b)[1]
When abscisic acid is reacted with excess $\text{NaBH}_4$, give the molecular formula of the organic product formed.
(c(i))[1]
When abscisic acid is treated with excess hot, concentrated, acidified $\text{KMnO}_4$, three separate carbon-containing products are produced. Draw the skeletal formula of the carbon-containing product with the largest molecular mass.
(c(ii))[2]
Identify the carbon-containing product with the smallest molecular mass. Explain how this product is formed.
(c(iii))[1]
Identify the third carbon-containing product from this reaction by providing its displayed or structural formula.